18 lines
359 B
C++
18 lines
359 B
C++
#include <bits/stdc++.h>
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using namespace std;
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#define int long long
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// 快速幂
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int qmi(int a, int b) {
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int res = 1;
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while (b) {
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cout << "b = " << (b & 1) << ", a = " << a << endl;
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if (b & 1) res = res * a;
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b >>= 1;
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a = a * a;
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}
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return res;
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}
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signed main() {
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cout << qmi(2, 10) << endl;
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} |